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通信学报 2003年第4期24卷 133-138页

作者：赵福祥赵红云王育民杨世平西安电子科技大学ISN国家重点实验室西安通信学院陕西西安710106 深圳市中兴通讯股份有限公司技术中心研究部广东深圳518004 西安通信学院

在公开的网络中采用匿名连接,使攻击者既窃听不到机密也实施不了流量分析。但现有方案中,使用重复加密和签名同一消息包的方法传送信息必然使系统效率降低;其次,使用常规公钥密码方法仍可使攻击者通过验证密钥等分析原发节点位置。而采... 详细信息

在公开的网络中采用匿名连接,使攻击者既窃听不到机密也实施不了流量分析。但现有方案中,使用重复加密和签名同一消息包的方法传送信息必然使系统效率降低;其次,使用常规公钥密码方法仍可使攻击者通过验证密钥等分析原发节点位置。而采用代理加密转换方法时,其中间节点不用解密就可把密文消息转换成后续节点可接受的密文消息,从而取得更高的隐蔽程度。因此,本文应用多方门限代理加密转换技术,提出了信息传送的新方案并分析了其安全性。

关键词：网络安全信息隐藏匿名路由代理加密转换门限加密转换秘密共享

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The Research on Policy-management-based Dynamic Spectrum Access Technology for Cognitive Network

The Research on Policy-management-based Dynamic Spectrum Acc...

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2009 ISECS International Colloquium on Computing, Communication, Control, and Management

作者： Lu Chuntao,Zhang Huyin,Wu Di School of Computer Wuhan university Wuhan,china An Hui institute for information Industry china Center for information Industry Development Beijing,china

Nowadays,it is a very popular topic to improve the performance of cognitive *** aim to provide a solution for cognitive network,through the policy-based performance management system which we are *** this paper,we proposes the policy-based dynamic spectrum access management system framework at first,and the distributed policy repository to provide *** also, there would be a part to present our design about some new strategies for the policy repository,that with the technology features of cognitive network for dynamic spectrum access,a cognitive network can detect the use of local channel and real-time status to respond automatically to avoid interrupts.

关键词： Policy Cognitive network Dynamic spectrum access

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二乘向量机在图像插值技术中的应用研究

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计算机工程与应用 2004年第17期40卷 82-84页

作者：郑胜田金文柳健三峡大学湖北宜昌443002 华中科技大学图像识别与人工智能研究所图像信息处理与智能控制教育部重点实验室武汉430074

图像插值过程实际上是利用已有的像素点来估计与这些像素点相邻的未知像素的颜色。可将一幅图像视为由像素坐标映射而成的二维颜色曲面。这样插值问题就可以视为由已知的像素构成的颜色曲面函数的回归问题。而基于统计学习理论(SLT)的... 详细信息

图像插值过程实际上是利用已有的像素点来估计与这些像素点相邻的未知像素的颜色。可将一幅图像视为由像素坐标映射而成的二维颜色曲面。这样插值问题就可以视为由已知的像素构成的颜色曲面函数的回归问题。而基于统计学习理论(SLT)的支持向量机(SVM)方法为解决这种高维非线性问题提供了一种新的途经。该文讨论了最小二乘向量机实现数字图像插值的应用方法,并进行了图像放大的试验验证。试验表明:基于RBF核的最小二乘向量机回归技术对数字图像的插值具有很强的适应性,其性能与已有的双立方插值技术相当。

关键词：统计学习理论(SLT) 最小二乘向量机(LS-SVM) 函数回归图像插值

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Fuzzy-Rough Set Based Attribute Reduction with a Simple Fuzzification Method

Fuzzy-Rough Set Based Attribute Reduction with a Simple Fuzz...

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第24届中国控制与决策会议

作者： Xueen Wang 1,2,3 , Deqiang Han 1 , Chongzhao Han 1,2,3 1. institute of integrated Automation, Xi’an Jiaotong university, Xi’an, 710049, china2. Ministry of Education Key lab for intelligent Networks and Network Security, Xi’an Jiaotong university, Xi’an, 710049, china3. State Key laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong university, Xi’an, 710049, china

The fuzzy-rough set based attribute reduction, which can get better reducts than the crisp rough set approach, has been paid more attention recently. Fuzzification is a step of data preprocess which was studied less in the application of fuzzy-rough set. In this paper, a simple fuzzification method deriving fuzzy discretization from K most important cuts in the application of feature selection is proposed. A comparative experiment between the proposed fuzzification method and a general fuzzy c-means based method is constructed on the UCI machine learning data repository. The experimental results show the obtained reducts using the proposed method can get higher classification accuracies and less number of selected attributes.

关键词： Feature Selection information Entropy Fuzzy-Rough Set Fuzzification

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A Pulse Design Method to Suppress Narrowband Interference for UWB system

A Pulse Design Method to Suppress Narrowband Interference fo...

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2009 Asia-Pacific Conference on information Processing

作者： Yanli HOU1 Jiawei HU2 Weimin HOU1 Boning HU1 1 institute of information Science and Engineering Hebei university of Science and Technology Shijiazhuang china2 china Electronic Technology Group Corporation 54th Shijiazhuang china

UWB（Ultra Wideband） system takes up extremely wide bandwidth,so it interferes with narrowband communication systems each other easily,that influences the system *** main approach to the problem is designing pulse waveform for UWB system to make it have notches in narrowband *** paper designed UWB pulse with APSWF（approximate prolate spheroidal wave functions） that is finite in time domain and frequency domain,made generated pulse satisfy the demand of spectrum *** experimental results showed that,the designed pulse could avoid the central frequencies of narrowband systems,and suppressed the narrowband interferences,so solved the coexistence of UWB system and narrowband communication systems successfully.

关键词： UWB pulse shape design APSWF

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An Improved Algorithm of Image Edge Detection Based on Grey Prediction Model

An Improved Algorithm of Image Edge Detection Based on Grey ...

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2010 International Conference on Computer,Mechatronics, Control and Electronic Engineering (CMCE 2010)

作者： He Tong-Li Math Department Chengdu institute of information Engineering Chengdu , china Gan Jian-Hong College of Software Engineering Chengdu institute of information Engineering Chengdu , china

With conventional edge detection algorithms, the shortcomings of undetected and artificial information will happen. An improved method based on grey prediction model is proposed to improve the performance of image edge detection considerably, and the corresponding experiments is carried out. The results show that the algorithm can effectively detect the edge of images, while retaining more vivid image details, comparing to the traditional algorithm。 This electronic document is a "live" template. The various components of your paper [title, text, heads, etc.] are already defined on the style sheet, as illustrated by the portions given in this document. DO NOT USE SPECIAL CHARACTERS, SYMBOLS, OR MATH IN YOUR TITLE OR ABSTRACT.

关键词： GM(1,1) model image processing edge detection

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THE DESIGN AND REALIZATION OF MULTI-SCALE NAVIGATION ELECTRONIC MAP

THE DESIGN AND REALIZATION OF MULTI-SCALE NAVIGATION ELECTRO...

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第一届交通运输工程国际学术会议

作者： Yan-hui Wang 1and Hao Meng 2 1 3D information collection and application Key lab of Education Ministry School of Environmental Resources & Tourism Capital Normal university Beijing 100037 china. 2 School of Public Policy & Management Tsinghua university Beijing 100084

Multi-scale navigation electronic map integrates digital mapping technology, GIS technology, multimedia technology and other high - tech means, and builds a convenient and visual spatial information services platform for route design, guide and display. Taking the multi-scale and multi-media characteristics into consideration, the design and development method of multi-scale navigation electronic map system is proposed. The total structure, key technique and solution strategies are explained in details. The key techniques based on interpolation method are provided for intelligent zoom of multi-scale road map. The test result shows the system function is valid and stable.

关键词： multi-scale navigation electronic map multimedia information multi-scale intelligent visualization

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Generalization of Some Attacks on RSA with Small Prime Combination and Small Private Exponent

Generalization of Some Attacks on RSA with Small Prime Combi...

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2009 Asia-Pacific Conference on information Processing

作者： Lidong Han Guangwu Xu Key lab of Cryptographic Technology and information Security Ministry of Education Shandong university Jinan 250100 china Department of Electrical Engineering and Computer Science university of Wisconsin-Milwaukee Milwaukee 53201-0784 USA

In 2002,de Weger proposed an attack on small RSA secret decryption exponent with small prime difference |p q|,which improved the insecure private key bound of Wiener and Boneh-Durfee ***,Maitra and Sarkar found new weak keys in another case when 2q p is *** this paper,several results on attacking RSA with small prime differences q p,2p q and small private exponent are *** observation is that when |ip jq| is small for some integers i,j,we can explore new insecure keys in *** of our results also makes some statement in literature more accurate.

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The Research on the Guidance Model based on Congestion Prediction

The Research on the Guidance Model based on Congestion Predi...

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2010 4th International Conference on intelligent information Technology Application (IITA2010)

作者： WEI Zhonghua/ Beijing university of Technology Traffic Engineering Key lab of Beijing, Beijing university of Technology Beijing, china GAO Li/ Beijing institute of technology School of Mechanical and vehicular Engineering, Beijing institute of Technology, Beijing 100081, china Beijing, china Wang Xi/ Beijing institute of technology School of Mechanical and vehicular Engineering, Beijing institute of Technology, Beijing 100081, china Beijing, china CHEN Xuemei/Beijing institute of technology School of Mechanical and vehicular Engineering, Beijing institute of Technology, Beijing 100081, china Jiangsu university Automobile Key laboratory, Jiangsu university Zhejiang, 212013, china Zhang Zhenhua/ Beijing institute of technology School of Mechanical and vehicular Engineering, Beijing institute of Technology, Beijing 100081, china Beijing, china

It is very important to provide guidance information timely and correctly in order to decrease traffic jam. This paper proposes the concept of time ahead of guidance first, the queuing theory model was used to forecast short-term travel time, and the guidance model was eastablished, which based on the traffic congestion prediction model. The Sitong Bridge to Zhongguancun First Bridge section was used as a concrete example to check the forecast model and the guidance model.

关键词： traffic jam the queuing theory congestion forecast guidance model

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基于移动智能体的分布式资源的智能集成

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系统仿真学报 2002年第11期14卷 1517-1520,1535页

作者：操龙兵南敬昌戴汝为中国科学院自动化所人工智能实验室北京100080 辽宁工程技术大学电子与信息工程系辽宁阜新123000

在信息丰富的网络环境中,分布式资源的智能集成对于分布式计算与分布式系统是极为重要的。通常采用的基于位置透明性的分布式计算技术,如DCOM、Java RMI、CORBA等,无法智能的、灵活的进行分布式信息的检索与分布式应用的集成,而对于基... 详细信息

在信息丰富的网络环境中,分布式资源的智能集成对于分布式计算与分布式系统是极为重要的。通常采用的基于位置透明性的分布式计算技术,如DCOM、Java RMI、CORBA等,无法智能的、灵活的进行分布式信息的检索与分布式应用的集成,而对于基于知识的交互协作更是无能为力。本文采用基于Java实现的移动智能体的移动计算能力与分布式工作机制实现分布式资源的智能集成,基于本地位置交互抽象机制,从而使移动计算融入到分布式计算中;讨论了进行分布式资源集成的计算模型,并通过分布式仿真实验说明了上述方法的集成机制与设计特点。

关键词：移动智能体分布式资源智能集成计算机网络信息资源

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